package com.dfbz.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter({"/user/*", "/article/*", "/dept/*", "/home/*", "/meet/*"})
public class LoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        Object obj = request.getSession().getAttribute("userId");
        if (null != obj) {
            filterChain.doFilter(request, response);
        } else {
            String uri = request.getRequestURI();
            if (uri.contains("showRegister") || uri.contains("forget")) {
                filterChain.doFilter(request, response);
            } else {
                response.sendRedirect(request.getContextPath() + "/");
            }
        }
    }

    @Override
    public void destroy() {

    }
}
